[Numpy-discussion] new mingw-w64 based numpy and scipy wheel (still experimental)
Sturla Molden
sturla.molden at gmail.com
Tue Jan 27 06:14:00 EST 2015
On 27/01/15 11:32, Carl Kleffner wrote:
> OpenBLAS in the test wheels is build with DYNAMIC_ARCH, that is all
> assembler based kernels are included and are choosen at runtime.
Ok, I wasn't aware of that option. Last time I built OpenBLAS I think I
had to specify the target CPU.
> Non
> optimized parts of Lapack have been build with -march=sse2.
Since LAPACK delegates almost all of its heavy lifting to BLAS, there is
probably not a lot to gain from SSE3, SSE4 or AVX here.
Sturla
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